Describe and explain, with illustrations, why it is important that flood defence systems, in particular flood walls and

[answerhappygod]

Describe and explain, with illustrations, why it is importantthat flood defence systems, in particular flood walls andflood embankments, are needed in areas at flood-risk. Then describeand explain the need for these systems to be assessed andmaintained once they are in action and the consequences of whatwould have if they were not be assessed and maintained.